Simulation of Segregated Flow Over the 2D Cylinder Assignment

Assignment Task

Description

Interference effects between two or more neighboring bodies create change in the flow surrounding them due to different flow separation and reattachment. This gives additional aerodynamic forces and high vibration may occur in certain wind directions relating to a phenomenon called Interference Galloping. A case study of computational fluid dynamics simulation on two-in-line cylinders (See figure below) addresses the different effects between two incoming wind directions 0° and 10.

The case study should run in the following approach:

• 2-D domain
• Inlet wind speed = 12 m/s
• Distance between cylinders A/D = 1.875
• Transient simulation*: 120 seconds

Expected results

• Brief review on previous investigation on two in-line cylinders in CFD
• Velocity contour and streamline between two cases
• Lift force comparison between two cases

Documentation

• One written report containing short background
• The written documentation should be prepared in an article or journal paper style with 6-10 pages. You can prepare the document with Word or with LaTeX
• Structure of the report: Introduction and brief description of case study, Methodology and numerical approach (size of domain, turbulence model, etc), Results, Conclusion.

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